Sometimes you want to access software that isn’t available on Linux. This seems to happen less frequently nowadays.

So, the task is to install virtual box on my linux box, and then install Windows 10 on top of that.

apt-get install virtualbox

This led to a series of errors:

WARNING: The character device /dev/vboxdrv does not exist.
Please install the virtualbox-dkms package and the appropriate
headers, most likely linux-headers-generic.

I solved this by upgrading to the bionic beaver Ubuntu release.

I have an ancient machine that I bought at the McCarran Las Vegas airport lost-n-found auction. Booting was paintfully slow.

Then, after booting up the Window VM, I got errors:

OOBEREGION
Something went wrong.

I solved this error by increasing the number of processors in Settings to 2.

Now I have a Windows 10 operating system to work with. 🙂